844440008 has 16 divisors (see below), whose sum is σ = 1602402480. Its totient is φ = 417132688.

The previous prime is 844440007. The next prime is 844440013. The reversal of 844440008 is 800044448.

It is a happy number.

It is a super-2 number, since 2×844440008² = 1426157854222080128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (844440007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 635210 + ... + 636537.

It is an arithmetic number, because the mean of its divisors is an integer number (100150155).

Almost surely, 2^844440008 is an apocalyptic number.

It is an amenable number.

844440008 is a deficient number, since it is larger than the sum of its proper divisors (757962472).

844440008 is a wasteful number, since it uses less digits than its factorization.

844440008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271836 (or 1271832 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 32.

The square root of 844440008 is about 29059.2499559090. The cubic root of 844440008 is about 945.1983040815.

The spelling of 844440008 in words is "eight hundred forty-four million, four hundred forty thousand, eight".